错误: 10/12/08 20:10:31 INFO hdfs.DFSClient: Could not obtain block blk_XXXXXXXXXXXXXXXXXXXXXX_YYYYYYYY from any node: java.io.IOException: No live nodes contain current block. Will get new block locations from namenode and retry 原因: Datanode 有一个同时处理文件…
MySQL错误"Specified key was too long; max key length is 1000 bytes"的解决办法 经过查询才知道,是Mysql的字段设置的太长了,于是我把这两个字段的长度改了一下就好了. 建立索引时,数据库计算key的长度是累加所有Index用到的字段的char长度后再按下面比例乘起来不能超过限定的key长度1000: latin1 = 1 byte = 1 character uft8 = 3 byte = 1 character …
在进行RSA2进行验签的时候,报了以下错误: java.security.SignatureException: Signature length not correct: got 344 but was expecting 256 at sun.security.rsa.RSASignature.engineVerify(RSASignature.java:189) at java.security.Signature$Delegate.engineVerify(Signature.java:…